Most people think this chicken is useless but you can use the archaeopteryx to fly for an unlimited amount of time! Just have an argy (or any other flying creature) on follow with a low following distance and when it is low on stamina drop from your bird and go back on it after a few seconds.... your bird is now full of stamina!
Don't put points into its movement speed if you want to glide faster. It glides as fast you run, so putting points into your movement speed will increase how fast it will glide. Hope this saves you from wasting levels like me : )
Oh archaeopteryx, you little chicken on steroids. This little guys is just a whole load of fun. They can carry you over vast distances, but also double as a, hey you seem to be falling, lemme help you out. However, getting down can be a bit of a problem. Otherwise... WOOOOOOHOOOOOOO OH YEAH IM RIDING THE SKY USING THE POWER OF A LITTLE CHICKEN THING